JP3189200B2 - Shield connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shield connector, and is most suitable for connecting a control device to an electric wire connected to a control element for controlling a hydraulic circuit used for an automatic transmission of an automobile or the like. Used for

[0002]

2. Description of the Related Art For example, a hydraulic circuit is used to engage and disengage components such as a torque converter and a transmission gear mechanism forming an automatic transmission of an automobile. In order to control this hydraulic circuit, it is necessary to connect the electric wire coated with insulating material electrically connected to control elements such as solenoid valves and the control equipment outside the housing of the automatic transmission without oil leakage. A shielded connector is used. The shield connector has an invention described in, for example, Japanese Patent Application Laid-Open No. 2-78673. As shown in FIG. 6, the present invention provides a substantially cylindrical casing 1 ", a wire 2 having a conductor 2a whose surface is covered with an insulating material 2b, and a conductor 2 of the wire 2 by caulking or the like.
a) and an inner plate 4 'having a substantially plate-shaped male terminal 3B having a conductor fixing portion 3b connected thereto and a hole 4'a into which the male terminal 3B is inserted and which is mounted in the casing 1 ".
And a shielding filler 7 that fills the outer periphery of the covering portion 2b and the conductor portion 2a of the electric wire 2 in the casing 1 ″ and solidifies them.

[0003] In addition to the male terminals 3B shown in Fig. 6, the terminals include an electric wire fixing portion 3a for caulking the covering portion 2b of the electric wire 2 and a conductor fixing portion for caulking the conductor portion 2a as shown in Fig. 7. and 2a, and fitting the male terminal 3B of the mating, a substantially cylindrical terminal portion 3c of the spring tongue 3c ₁ caused switching inwardly elastically holding a wire fixing portion 3a and a substantially cylindrical terminal portion 3c There is a female terminal 3A formed by the thin neck portion 3d disposed between them.

[0004]

However, especially when the terminal is a female terminal 3A as shown in FIG. 7, a shielded connector as shown in FIG. 6 cannot be used. That is, when the female terminal 3A is fitted into the hole 4'a provided in the inner plate 4 ', the terminal portion 3 of the female terminal 3A
c has a substantially cylindrical shape and a hollow inside for fitting a substantially plate-shaped male terminal 3B as a mating terminal, so that the electric wire 2 and the female terminal 3A are shielded in the casing 1 ″. The filler 7 packed in the outer periphery is used for the wire fixing portion 3a.
From the narrow neck portion 3d provided between the terminal portion 3c and the terminal portion 3c, it penetrates into the substantially cylindrical terminal portion 3d, flows into the fitting side of the mating terminal, and is solidified. Therefore, since the terminal portion 3c is clogged with the filler 7, the male terminal 3B cannot be fitted into the female terminal 3A. Even if the male terminal 3B can be fitted into the terminal portion 3c, the spring tongue piece 3 formed in the terminal portion 3c can be fitted.
c ₁ can not be operated by the filler 7 is solidified, there is an inconvenience that it can not be elastically holding the male terminal 3B. When the outer diameter of the substantially cylindrical terminal portion 3c is larger than the size of the hole 4'a, the female terminal 3A is press-fitted into the hole 4'a provided in the inner plate 4 'and inserted into the narrow neck portion 3d. When the inner plate 4 'is attached at the position where it is located, there is a gap between the outer peripheral surface of the terminal portion 3c and the hole 4'a of the inner plate 4'. As a result, the female terminal 3A is attached to the inner plate 4 'with rattling, so that the female terminal 3A set and mounted in the casing 1 "via the inner plate 4' is displaced. The terminal 3A cannot be mounted and the hole 4'a of the inner plate 4 '
There is a disadvantage that the filler 7 flows into the fitting side of the male terminal 3B from the gap generated between the female terminal 3A and the narrow neck 3d of the female terminal 3A and is solidified.

Therefore, according to the present invention, the work of attaching the inner plate to the female terminal can be carried out easily and reliably by dividing the inner plate into two parts and holding the female terminal, and connecting the female terminal and the female terminal in the casing. The inner plate prevents the filler packed into the outer periphery of the electric wire from flowing into the fitting side of the male terminal, so that the male terminal is easily and reliably held at the terminal portion, and the female terminal is in the substantially cylindrical terminal portion. It is an object of the present invention to secure a male terminal by holding a male terminal when the female terminal has a spring tongue piece formed thereon.

[0006]

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and comprises a substantially cylindrical casing, a covered electric wire having a conductor portion covered with an insulating material, and
A terminal having a conductor fixing portion fixed to the conductor portion by caulking or the like and a coating fixing portion connected to the coating portion through a thin neck portion, and an inner plate attached in the casing by inserting the terminal And a filler that fills and solidifies the outer periphery of the covered electric wire in the casing, wherein the terminal is a female terminal, and the thin neck portion of the female terminal is sandwiched between two divided inner plates. , Fixed means was adopted.

Further, the present invention adopts a means in which a spring tongue for elastically holding the male terminal is provided adjacent to the narrow neck portion on the female terminal.

According to the present invention, the inner plate is formed by two plate components which can be abutted with each other, and one abutting end of the plate component is fitted into a narrow neck portion of the female terminal. A means is provided in which the convex portion is accommodated at the abutting end of the other plate component piece, and a concave portion substantially matching the outer diameter of the narrow neck portion is provided.

Further, according to the present invention, the inner plate is provided with locking recesses protruding on both right and left sides of the abutting end of one of the plate forming pieces and on the front and back surfaces of a substantially intermediate portion, and the abutting end of the other plate forming piece. A means is used which is formed so as to be able to be freely engaged and disengaged by engaging means comprising engaging protrusions provided on the left and right sides and the intermediate portion so as to be capable of engaging and disengaging with the engaging recess.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 5 show a case where the present invention is mainly applied to a female terminal, and the same portions as those shown in FIGS. 6 and 7 are denoted by the same reference numerals. Reference numeral 1 denotes a casing formed of an insulating material such as a synthetic resin, and the casing 1 is formed in a substantially cylindrical shape. 1a is a casing 1 described later.
A plurality of locking projections protruding inside the casing 1
When the inner plate 4 is mounted therein, the inner plate 4 described later is engaged with the locking projection 1a. 1c is a hole into which the male terminal is inserted.

Reference numeral 2 denotes an electric wire, and the electric wire 2 is a conductor 2a.
And an insulating coating 2 covering the surface of the conductor 2a.
b. In this embodiment, a case will be described in which two electric wires 2 are connected to a terminal to be described later and incorporated in the casing 1.

Reference numeral 3 denotes a terminal connected to the conductor 2a of the electric wire 2 by caulking or the like. In this embodiment, a female terminal 3A is provided.
Will be described representatively. The female terminal 3A is formed, for example, by punching a thin metal plate, and is bent oppositely to fix the caulking portion 2b of the electric wire 2 by caulking, and an adjacent wire fixing portion 3a. inner and provided, and the conductor fixed portion 3b for fixing the conductor portion 2a of the wire 2 by bending opposite, substantially strip-shaped spring tongue 3c ₁ to hold elastically the male terminal to be fitted A substantially cylindrical terminal portion 3c which is cut and raised in the direction from the lower surface of the front end portion and curved rearward is formed through a narrow neck portion 3d composed of left and right facing wall surfaces. 2 and 3, the wire 2 is fixed by crimping the insulative covering portion 2b by the wire fixing portion 3a and the conductor portion 2a at the tip end of the covering portion 2b by the conductor fixing portion 3b. The case where three female terminals 3A are assembled in the casing 1 is shown.

Reference numeral 4 denotes an inner plate made of a synthetic resin into which the female terminals 3A, 3A as terminals are inserted and assembled in the casing 1. The inner plate 4 is shown in FIG.
As shown in the figure, two upper and lower plate components 4A, 4B on an axis Y crossing the place where the female terminals 3A, 3A are inserted.
Is divided into The plate components 4A and 4B sandwich the terminal portion 3c, into which the male terminal as the mating terminal is fitted, between the upper and lower two plate components 4A and 4B via the terminal accommodating portion 5. The terminal accommodating portion 5 is provided with a wire fixing portion 3 of the female terminal 3A at _one abutting end S1 of the plate constituting piece 4A.
terminal part 3c into which a male terminal as a mating terminal is inserted.
Fine and convex portions 5a provided to fit into the neck 3d, the other of said plate constituent pieces in abutting end S ₂ of 4B the convex portion 5a is housed the narrow neck portion which is provided between the And a concave portion 5b provided so as to substantially match the outer diameter of 3d.

Reference numeral 6 denotes a locking means provided with an appropriate number for coupling the plate-forming pieces 4A, 4B divided into two so as to sandwich the female terminals 3A, 3A in the terminal accommodating portion 5. The locking means 6 comprises locking recesses 6a, 6a, 6a protruding from the right and left sides of the abutting end S1 of the _one plate forming piece 4A and the front and back surfaces of the middle part thereof, and the other plate forming piece 4B. the locking recess 6a on the left and right sides and front and back surfaces of an intermediate portion of the coupling end S _2, consisting of 6a, the locking projections 6b provided in correspondence to disengageably to 6a, 6b, and 6b.

Reference numeral 7 denotes a filler which is filled in the casing 1 until the outer periphery of the covering portion 2b of the electric wire 2 and the outer periphery of the conductor portion 2a are blocked by the inner plate 4. This filler 7 is solidified. Wire 2 and female terminal 3A
Is fixed in the casing 1. The flow of oil sent along the electric wire 2 by capillary action is blocked by the filler 7. As the filler 7, for example, a synthetic resin such as an epoxy resin is used. Casing 1 for filler 7
The inside is filled by opening the opening 1b of the casing 1 upward.

One embodiment of the present invention has the above configuration.
To mount the female terminal 3A to which the electric wire 2 is connected in the casing 1, first, a thin neck portion 3d provided between the substantially cylindrical terminal portion 3c of the female terminal 3A and the electric wire fixing portion 3a and the conductor fixing portion 2a.
Is sandwiched in the terminal accommodating portion 5 by the plate component pieces 4A and 4B divided into two. Moreover, the abutting ends S of the other plate constituting piece 4B are inserted into three locking recesses 6a protruding from the right and left sides of the abutting end S1 of the _one plate constituting piece 4A and the front and back surfaces of a substantially intermediate portion thereof. _By engaging locking projections 6b provided on the left and right sides and on the front and back surfaces of the intermediate portion between the left and right sides and the locking recesses 6a so as to be detachable, the plate constituting pieces 4A,
4B are integrated.

Next, as described above, the electric wire 2 is connected, and the inner plate 4 locks the female terminal 3A with the inner plate 4 attached to the thin neck portion 3d to the plurality of locking projections 1a in the casing 1. Insert up to.

Then, after the casing 1 is directed upward so that the opening 1b faces upward, the casing 1 is filled with a filler 7 made of epoxy resin and solidified.

At this time, the projection 5a of the terminal accommodating portion 5 provided at the abutting end S1 of the _one plate constituting piece 4A is fitted into the narrow neck 3d of the female terminal 3A. female terminal 3A in a state where narrow neck portion 3d of the female terminal 3A is fitted into the recess 5b of the terminal accommodating portion 5 provided on the other plate of the constituent pieces 4B abutting end S ₂ made possible abutment ₁ Since the inner plate 4 is attached to the inside, the filler 7 flowing into the casing 1 flows into the substantially cylindrical terminal portion 3c into which the male terminal as a mating terminal is fitted by the inner plate 4. Is prevented.

[0020] Thus generally cylindrical terminal portion 3 substantially strip-shaped spring tongue 3c ₁ so as to elastically hold the male terminal as shown in FIG. 1
female terminal 3 curved backward from the lower surface of the front end portion inward of c
The filler 7 is prevented from flowing into the terminal portion 3c of A by the convex portion 5a of the inner plate 4 fitted in the narrow neck portion 3d. For this reason, the male terminal fitted into the substantially cylindrical terminal portion 3c of the female terminal 3A is
rattling is elastically held by the c ₁ is prevented, it is securely connected to the female terminal 3A and the male terminal.

When the outer diameter of the substantially cylindrical terminal portion 3c of the female terminal 3A is considerably larger than that of the thin neck portion 3d, it is considerably large as in the conventional shield connector shown in FIGS. 6 and 7. A hole is not provided in the inner plate to press-fit the female terminal 3A. That is, the inner plate 4 is divided into the plate component pieces 4A and 4B as described above on the axis Y crossing the insertion location of the female terminals 3A and 3A. The narrow neck portion 3d of the female terminal 3A is fitted into the recess 5b formed in the abutting end S ₂ of one plate constituent pieces 4B, convex portions provided on the abutting end S ₁ of the other plate constituent pieces 4A 5a is fitted into the narrow neck 3d, so that the outer diameter of the substantially cylindrical terminal 3c of the female terminal 3A is considerably larger than that of the narrow neck 3d as in the conventional case. Regardless of the size of the hole provided in the plate or the shape of the female terminal 3A, the convex portion 5a of the plate component 4A is fitted into the narrow neck 3d, and the narrow neck 3d is fitted into the concave portion 5b of the plate component 4B.
Are fitted to each other to thereby divide the plate component piece 4
A and 4B can clamp the thin neck portion 3d of the female terminal 4A and mount it inside the casing 1. Therefore, the work of attaching the inner plate 4 to the female terminal 3A can be performed quickly and reliably, and the inner plate 4 is not pressed into the hole. Therefore, there is no inconvenience such as the inner plate 4 being damaged.

[0022]

As described above, according to the present invention, since the female terminal is sandwiched by the inner plate divided into two parts, even if the manufacturing accuracy of the inner plate and the female terminal is not high, the work of attaching the female terminal to the hole provided in the inner plate is performed. The inner plate prevents the filler filled in the outer periphery of the female terminal and the electric wire connected to the female terminal from flowing into the fitting side of the male terminal as the mating terminal in the casing. Thus, the male terminal can be easily and reliably held at the terminal portion. In addition, when the female terminal forms a spring tongue in the substantially cylindrical terminal portion, the male terminal is held in the terminal by the spring tongue so that reliable connection can be made.

[Brief description of the drawings]

FIG. 1 is a sectional view of an assembled state showing one embodiment of a shielded connector of the present invention.

FIG. 2 is an exploded perspective view showing a state in which an inner plate divided into two is mounted on the female terminal.

FIG. 3 is a sectional view of the same.

FIG. 4 is a perspective view showing a state where the female terminal to which the inner plate is attached is assembled into a casing.

FIG. 5 is a sectional view of the same.

FIG. 6 is a sectional view showing a conventional shield connector of this type in which a male terminal is incorporated in a casing.

FIG. 7 is a cross-sectional view showing a state where the female terminal is similarly fitted by being pressed into an inner plate.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Casing 2 Electric wire 2a Conductor part 2b Coating part 3 Terminal 3A Female terminal 3a Terminal fixing part 3b Conductor fixing part 3c Terminal part 3d Neck part 4 Inner plate 4A Plate component 4B Plate component 5 Terminal accommodating part 5a Convex part 5b concave part 6 locking means 6a engagement recess 6b engagement projections 7 filler S ₁ abutting end S ₂ abutting end

Claims (4)

(57) [Claims] 1. A substantially cylindrical casing, a covered electric wire having a conductor portion covered with an insulating material, and a conductor fixing portion connected to the conductor portion by caulking or the like and a sheath fixing portion connected to the covering portion by a narrow neck portion. A terminal having the terminal, the inner plate attached to the casing by inserting the terminal, and a shield connector comprising a filler that is filled into the outer periphery of the covered electric wire in the casing and solidifies, The terminal according to claim 1, wherein the terminal is a female terminal, and the thin neck portion of the female terminal is sandwiched and fixed by an inner plate divided into two parts. 2. The female terminal according to claim 1, wherein a spring tongue for elastically holding the male terminal is formed in a substantially cylindrical terminal provided adjacent to the narrow neck. Shield connector. 3. The inner plate is formed by two plate components that can be abutted with each other, and one abutting end of the plate component is provided with a convex portion that fits in the narrow neck portion of the female terminal. 2. The shielded connector according to claim 1, wherein a concave portion is provided at the abutting end of the other plate constituting piece, the concave portion being accommodated in the convex portion and substantially matching the outer diameter of the narrow neck portion. 4. The terminal accommodating portion includes a locking recess protruding from both sides of the abutting end of one of the plate constituent pieces and front and back surfaces of a substantially middle portion, and a abutting end of the other plate constituent piece. 2. The shield according to claim 1, wherein the shield is detachably formed by locking means comprising locking protrusions provided on both left and right sides and an intermediate portion so as to be detachably engaged with the locking recess. connector.